From 967ecf39739e4b21ca7b1f8b4c15ca5874b9e4e5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=89=E5=92=B2=E6=99=BA=E5=AD=90?= <sxzz@sxzz.moe>
Date: Sun, 26 Sep 2021 13:53:59 +0800
Subject: [PATCH] build: fix MaxListenersExceededWarning (#3637)

---
 build/utils/process.ts | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/build/utils/process.ts b/build/utils/process.ts
index 4ed8459a85..504b2db309 100644
--- a/build/utils/process.ts
+++ b/build/utils/process.ts
@@ -12,12 +12,17 @@ export const run = async (command: string, cwd: string = projRoot) =>
       cwd,
       stdio: 'inherit',
     })
+
+    const onProcessExit = () => app.kill('SIGHUP')
+
     app.on('close', (code) => {
+      process.removeListener('exit', onProcessExit)
+
       if (code === 0) resolve()
       else
         reject(
           new Error(`Command failed. \n Command: ${command} \n Code: ${code}`)
         )
     })
-    process.on('exit', () => app.kill('SIGHUP'))
+    process.on('exit', onProcessExit)
   })